Pinhole Leak Detection & Repair in Commerce City, CO

Before SACWSD’s 2021 centralized softening project, Commerce City’s water hardness ran at roughly 21 grains per gallon, placing it in the very-hard classification at the upper range for Front Range Colorado communities. The 2021 project dropped the level to about 7 grains per gallon, a 67 percent reduction. New construction benefits from that change. But the type-M copper supply lines installed in Commerce City’s 1960s–80s tract homes spent 40 to 60 years in contact with 21-gpg water. And the mineral deposits from that era have been accelerating interior pitting corrosion in those pipe walls for decades. Those pipes are failing now, in clusters, across Commerce City’s scattered tract neighborhoods.

Pinhole failures are small, 1 to 3 millimeter perforations in a thinned pipe wall, and they lose water at 0.1 to 0.3 gallons per hour. At that rate, water goes somewhere in the wall or floor assembly for weeks before surfacing visually. A SACWSD bill that climbed $30 with no explanation is often the first indicator before any wet spot appears.

Why Electronic Detection Is Needed

Standard acoustic ground-contact equipment detects the hiss of pressurized water escaping through a fracture. At 0.1 to 0.3 gallons per hour, pinhole leaks produce a signal below the noise floor of standard acoustic devices in most Commerce City residential environments. Electronic amplification equipment processes the raw signal with digital filtering algorithms that isolate the specific frequency band of a small pressurized leak and suppress background frequencies from traffic near I-70, HVAC systems, and adjacent water use.

Electronic correlation software goes further. Two listening points bracket the suspect pipe run, and the processor calculates the time differential between the leak signal arriving at each point. From the known pipe length and timing differential, it triangulates the leak position as a distance from each point. The result is accurate to within 12 to 18 inches for copper supply in standard Commerce City wall configurations, which determines where the access cut goes.

The Pattern After the First Pinhole

One pinhole repair on 55-year-old type-M copper addresses that failure and leaves the rest of the circuit in place. The adjacent pipe sections are at the same corrosion stage from the same decades of 21-gpg water contact. A second pinhole on the same circuit typically appears within 6 to 18 months. The third follows. Three spot repairs over two years on a 1970s Commerce City tract home costs more in combined access-cut, repair, and patch labor than a full circuit repipe at the time of the first failure would have cost.

A supply survey after the first pinhole identifies how many other circuits are at a similar corrosion stage. That survey, not a square-footage estimate, drives the repair scope recommendation. For homes in Fairfax, Rose Hill, and scattered tract areas of Commerce City built before 1980 with original copper throughout, the survey answer is usually more than one circuit.

Whole-house repiping with PEX eliminates the serial-failure cycle. Post-2021 SACWSD water at 7 grains per gallon is significantly less corrosive to copper than the pre-softening supply, but existing pipe walls in pre-2000 homes already carry decades of accumulated damage. The pipe condition is the issue, not the current water chemistry. Test your SACWSD meter: close all fixtures, watch the curb-box flow indicator for 90 seconds, and call (303) 552-3896 if it moves.

Call 24/7: (303) 552-3896

Frequently Asked Questions

Related Services

• Copper Pipe Leak Detection & Repair
• Whole-House Repipe Service
• Electronic Leak Detection
• Wall Leak Detection & Repair
• Non-Invasive Leak Detection
• Plumbing Leak Detection & Repair

Locations We Serve

• Fairfax
• Rose Hill
• Original Commerce City
• North Beach
• Adams City